Scelta multipla
An element possesses 4 energy levels. How many total electrons can it theoretically hold?
2740
views
9
rank
9. Electrons in Atoms and the Periodic Table
Electronic Structure: Number of Electrons
Scelta multipla
Which neutral element has 47 electrons?
A
Gold (Au)
B
Palladium (Pd)
C
Silver (Ag)
D
Cadmium (Cd)
Guida verificata passo dopo passo1
Recall that a neutral atom has an equal number of protons and electrons.
Identify the atomic number of each element, which corresponds to the number of protons (and electrons in a neutral atom).
Look up the atomic numbers: Gold (Au) is 79, Palladium (Pd) is 46, Silver (Ag) is 47, and Cadmium (Cd) is 48.
Since the element with 47 electrons must have an atomic number of 47, match this to the element Silver (Ag).
Conclude that the neutral element with 47 electrons is Silver (Ag).
Video correlati
Pratica correlata
